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Merged
alamb merged 3 commits into from
Aug 8, 2024
Merged

Avoid unecessary copy when reading arrow files #11840

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47be719
avoid copy
XiangpengHao Aug 6, 2024
64eff78
fmt
XiangpengHao Aug 6, 2024
fd82bfa
Merge remote-tracking branch 'apache/main' into string-view-stable
alamb Aug 8, 2024
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fmt
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@XiangpengHao
XiangpengHao committed Aug 6, 2024
commit 64eff784d3ccb6a416b55bcbb55a0d9487dd3e52
10 changes: 8 additions & 2 deletions datafusion/core/src/datasource/physical_plan/arrow_file.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -297,7 +297,10 @@ impl FileOpener for ArrowOpener {
for (dict_block, dict_result) in
footer.dictionaries().iter().flatten().zip(dict_results)
{
decoder.read_dictionary(dict_block, &Buffer::from_bytes(dict_result.into()))?;
decoder.read_dictionary(
dict_block,
&Buffer::from_bytes(dict_result.into()),
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@alamb alamb Aug 6, 2024

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👍 this was doing an implicit copy before

)?;
}

// filter recordbatches according to range
Expand Down Expand Up @@ -332,7 +335,10 @@ impl FileOpener for ArrowOpener {
.into_iter()
.zip(recordbatch_results)
.filter_map(move |(block, data)| {
match decoder.read_record_batch(&block, &Buffer::from_bytes(data.into())) {
match decoder.read_record_batch(
&block,
&Buffer::from_bytes(data.into()),
) {
Ok(Some(record_batch)) => Some(Ok(record_batch)),
Ok(None) => None,
Err(err) => Some(Err(err)),
Expand Down